These are new old stock and the prongs are 5/16" long. There are 100 pieces. Not like the cheap ones around now these are very nice old stock.
3/8" Nickel / Solid Round Spots / Studs For Leather (Pack Of 100)
$6.0
Brand
Unbranded
Type
Stud/Tack
Shape
Dome
Size
3/8"
Included
100 Pieces
Color
Silver
Material
Brass
Country/Region of Manufacture
United States
Finish
Nickel Plated
condition
New